pastebinit: 1.4.1 -> 1.5

Semi-automatic update. These checks were performed:

- built on NixOS
- ran `/nix/store/5jkp246zcc0k7lbrkngsr005brnf3giy-pastebinit-1.5/bin/pastebinit -h` got 0 exit code
- ran `/nix/store/5jkp246zcc0k7lbrkngsr005brnf3giy-pastebinit-1.5/bin/pastebinit -v` and found version 1.5
- ran `/nix/store/5jkp246zcc0k7lbrkngsr005brnf3giy-pastebinit-1.5/bin/pastebinit -h` and found version 1.5
- found 1.5 with grep in /nix/store/5jkp246zcc0k7lbrkngsr005brnf3giy-pastebinit-1.5
- found 1.5 in filename of file in /nix/store/5jkp246zcc0k7lbrkngsr005brnf3giy-pastebinit-1.5

cc "@lethalman"